login

Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.

A073968 as a simple table

na(n)
10
20
31
420
5125
6650
73150
815625
978000
10390625
111952500
129762500
1348815625
14244125000
151220703125
166103593750
1730517656250
18152587890625
19762939062500
203814697265625
2119073484375000
2295367421875000
23476837119140625
242384185742187500
2511920928955078125

[0,0,1,20,125,650,3150,15625,78000,390625,1952500,
 9762500,48815625,244125000,1220703125,6103593750,
 30517656250,152587890625,762939062500,
 3814697265625,19073484375000,95367421875000,
 476837119140625,2384185742187500,
 11920928955078125]